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Revenue from Contracts with Customers (Tables) | 6 Months Ended
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Jun. 30, 2023
Revenue from Contracts with Customers [Line Items] |
Disaggregation of Revenue [Table Text Block] | The following tables show revenues from contracts with customers disaggregated by customer class for the periods ended June 30.
| Three Months
| Residential |  | Commercial |  | Industrial |  | Other (a) |  | Wholesale - municipality |  | Wholesale - other (b) |  | Transmission |  | Revenues from Contracts with Customers
PPL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PA Regulated | $ | 340 |  |  | $ | 105 |  |  | $ | 11 |  |  | $ | 13 |  |  | $ | — |  |  | $ | — |  |  | $ | 199 |  |  | $ | 668 |
KY Regulated | 298 |  |  | 237 |  |  | 160 |  |  | 66 |  |  | 4 |  |  | 9 |  |  |  |  | 774 |
RI Regulated | 141 |  |  | 49 |  |  | 4 |  |  | 149 |  |  | — |  |  | — |  |  | 36 |  |  | 379 |
Corp and Other | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total PPL | $ | 779 |  |  | $ | 391 |  |  | $ | 175 |  |  | $ | 228 |  |  | $ | 4 |  |  | $ | 9 |  |  | $ | 235 |  |  | $ | 1,821 |
2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PA Regulated | $ | 329 |  |  | $ | 117 |  |  | $ | 30 |  |  | $ | 14 |  |  | $ | — |  |  | $ | — |  |  | $ | 160 |  |  | $ | 650 |
KY Regulated | 339 |  |  | 251 |  |  | 167 |  |  | 93 |  |  | 8 |  |  | 26 |  |  | — |  |  | 884 |
RI Regulated | 31 |  |  | 12 |  |  | 1 |  |  | 47 |  |  | — |  |  | — |  |  | 16 |  |  | 107 |
Corp and Other | — |  |  | — |  |  | — |  |  | 9 |  |  | — |  |  | — |  |  | — |  |  | 9 |
Total PPL | $ | 699 |  |  | $ | 380 |  |  | $ | 198 |  |  | $ | 163 |  |  | $ | 8 |  |  | $ | 26 |  |  | $ | 176 |  |  | $ | 1,650 |
PPL Electric |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 340 |  |  | $ | 105 |  |  | $ | 11 |  |  | $ | 13 |  |  | $ | — |  |  | $ | — |  |  | $ | 199 |  |  | $ | 668 |
2022 | $ | 329 |  |  | $ | 117 |  |  | $ | 30 |  |  | $ | 14 |  |  | $ | — |  |  | $ | — |  |  | $ | 160 |  |  | $ | 650 |
LG&E |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 151 |  |  | $ | 119 |  |  | $ | 47 |  |  | $ | 26 |  |  | $ | — |  |  | $ | 11 |  |  | $ | — |  |  | $ | 354 |
2022 | $ | 169 |  |  | $ | 124 |  |  | $ | 49 |  |  | $ | 47 |  |  | $ | — |  |  | $ | 22 |  |  | $ | — |  |  | $ | 411 |
KU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 147 |  |  | $ | 117 |  |  | $ | 113 |  |  | $ | 40 |  |  | $ | 4 |  |  | $ | 10 |  |  | $ | — |  |  | $ | 431 |
2022 | $ | 170 |  |  | $ | 127 |  |  | $ | 118 |  |  | $ | 45 |  |  | $ | 8 |  |  | $ | 22 |  |  | $ | — |  |  | $ | 490 |
| Six Months
| Residential |  | Commercial |  | Industrial |  | Other (a) |  | Wholesale - municipality |  | Wholesale - other (b) |  | Transmission |  | Revenues from Contracts with Customers
PPL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PA Regulated | $ | 968 |  |  | $ | 253 |  |  | $ | 34 |  |  | $ | 26 |  |  | $ | — |  |  | $ | — |  |  | $ | 277 |  |  | $ | 1,558 |
KY Regulated | 741 |  |  | 511 |  |  | 324 |  |  | 126 |  |  | 11 |  |  | 20 |  |  | — |  |  | 1,733 |
RI Regulated | 370 |  |  | 150 |  |  | 13 |  |  | 364 |  |  | — |  |  | — |  |  | 81 |  |  | 978 |
Corp and Other | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total PPL | $ | 2,079 |  |  | $ | 914 |  |  | $ | 371 |  |  | $ | 516 |  |  | $ | 11 |  |  | $ | 20 |  |  | $ | 358 |  |  | $ | 4,269 |
2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PA Regulated | $ | 782 |  |  | $ | 225 |  |  | $ | 45 |  |  | $ | 26 |  |  | $ | — |  |  | $ | — |  |  | $ | 307 |  |  | $ | 1,385 |
KY Regulated | 817 |  |  | 521 |  |  | 321 |  |  | 176 |  |  | 14 |  |  | 45 |  |  | — |  |  | 1,894 |
RI Regulated | 31 |  |  | 12 |  |  | 1 |  |  | 47 |  |  | — |  |  | — |  |  | 16 |  |  | 107 |
Corp and Other | — |  |  | — |  |  | — |  |  | 12 |  |  | — |  |  | — |  |  | — |  |  | 12 |
Total PPL | $ | 1,630 |  |  | $ | 758 |  |  | $ | 367 |  |  | $ | 261 |  |  | $ | 14 |  |  | $ | 45 |  |  | $ | 323 |  |  | $ | 3,398 |
| Six Months
| Residential |  | Commercial |  | Industrial |  | Other (a) |  | Wholesale - municipality |  | Wholesale - other (b) |  | Transmission |  | Revenues from Contracts with Customers
PPL Electric |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 968 |  |  | $ | 253 |  |  | $ | 34 |  |  | $ | 26 |  |  | $ | — |  |  | $ | — |  |  | $ | 277 |  |  | $ | 1,558 |
2022 | $ | 782 |  |  | $ | 225 |  |  | $ | 45 |  |  | $ | 26 |  |  | $ | — |  |  | $ | — |  |  | $ | 307 |  |  | $ | 1,385 |
LG&E |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 392 |  |  | $ | 271 |  |  | $ | 96 |  |  | $ | 42 |  |  | $ | — |  |  | $ | 27 |  |  | $ | — |  |  | $ | 828 |
2022 | $ | 415 |  |  | $ | 270 |  |  | $ | 94 |  |  | $ | 86 |  |  | $ | — |  |  | $ | 43 |  |  | $ | — |  |  | $ | 908 |
KU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 | $ | 349 |  |  | $ | 240 |  |  | $ | 228 |  |  | $ | 84 |  |  | $ | 11 |  |  | $ | 17 |  |  | $ | — |  |  | $ | 929 |
2022 | $ | 402 |  |  | $ | 251 |  |  | $ | 227 |  |  | $ | 89 |  |  | $ | 14 |  |  | $ | 34 |  |  | $ | — |  |  | $ | 1,017 |
(a)Primarily includes revenues from pole attachments, street lighting, other public authorities and other non-core businesses. The Rhode Island Regulated segment primarily includes open access tariff revenues, which are calculated on combined customer classes. (b)Includes wholesale power and transmission revenues. LG&E and KU amounts include intercompany power sales and transmission revenues, which are eliminated upon consolidation at the Kentucky Regulated segment.
Credit Loss Recognized from Contracts with Customers [Table Text Block] | The following table shows the accounts receivable and unbilled revenues balances that were impaired for the periods ended June 30.
| Three Months |  | Six Months
| 2023 |  | 2022 |  | 2023 |  | 2022
PPL | $ | 6 |  |  | $ | 25 |  |  | $ | 26 |  |  | $ | 33 |
PPL Electric | 7 |  |  | — |  |  | 17 |  |  | 5 |
LG&E | — |  |  | 1 |  |  | 1 |  |  | 2 |
KU | 1 |  |  | 1 |  |  | 1 |  |  | 2 |
Contract with Customer, Asset and Liability [Table Text Block] | The following table shows the balances and certain activity of contract liabilities resulting from contracts with customers.
| PPL |  | PPL Electric |  | LG&E |  | KU
Contract liabilities at December 31, 2022 | $ | 34 |  |  | $ | 23 |  |  | $ | 5 |  |  | $ | 6 |
Contract liabilities at June 30, 2023 | 48 |  |  | 35 |  |  | 6 |  |  | 7 |
Revenue recognized during the six months ended June 30, 2023 that was included in the contract liability balance at December 31, 2022 | 18 |  |  | 7 |  |  | 5 |  |  | 6 |
Contract liabilities at December 31, 2021 | $ | 42 |  |  | $ | 25 |  |  | $ | 6 |  |  | $ | 6 |
Contract liabilities at June 30, 2022 | 33 |  |  | 16 |  |  | 6 |  |  | 5 |
Revenue recognized during the six months ended June 30, 2022 that was included in the contract liability balance at December 31, 2021 | 24 |  |  | 12 |  |  | 6 |  |  | 6 |

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